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core-lightning/common/cryptomsg.h

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headers: fix up header idempotent lines. For future reference, done via: for f in `find wire/ bitcoin/ common/ lightningd -name '*.h' ! -name 'gen*'`; do ID=`echo -n LIGHTNING/$f | tr 'a-z' 'A-Z' | tr -cs 'A-Z0-9' _`; sed 's/^#\(ifndef\|define\) .*_H$/#\1 '$ID/ < $f | sed 's,#endif /..*_H ./$,#endif /* '$ID' */,' | bagto $f; done Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-08-28 18:06:01 +02:00
#ifndef LIGHTNING_COMMON_CRYPTOMSG_H
#define LIGHTNING_COMMON_CRYPTOMSG_H
lightningd/cryptomsg: routines to encrypt on the wire. After the handshake, it's a simple matter of AEAD and key rotation. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-01-10 06:08:33 +01:00
#include "config.h"
cryptomsg: add towire/fromwire for crypto state. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-01-10 06:08:33 +01:00
#include <ccan/tal/tal.h>
crypto_state: move to its own file. In particular, the main daemon needs to pass it about (marshal/unmarshal) but it won't need to actually use it after the next patch. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-10-11 11:56:50 +02:00
#include <common/crypto_state.h>
lightningd/cryptomsg: routines to encrypt on the wire. After the handshake, it's a simple matter of AEAD and key rotation. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-01-10 06:08:33 +01:00
connectd/peer_exchange_initmsg: handle peer comms ourselves. connectd is the only user of the cryptomsg async APIs; better to open-code it here. We need to expose a little from cryptomsg(), but we remove the 'struct peer' entirely from connectd. One trick is that we still need to defer telling lightningd when a peer reconnects (until it tells us the old one is disconnected). So now we generate the message for lightningd and send it once we're woken. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2018-09-27 23:04:19 +02:00
/* BOLT #8:
*
* ### Receiving and Decrypting Messages
*
* In order to decrypt the _next_ message in the network stream, the
* following steps are completed:
*
* 1. Read _exactly_ 18 bytes from the network buffer.
*/
#define CRYPTOMSG_HDR_SIZE 18
/* BOLT #8:
*
* 4. Read _exactly_ `l+16` bytes from the network buffer
*/
#define CRYPTOMSG_BODY_OVERHEAD 16
lightningd/cryptomsg: routines to encrypt on the wire. After the handshake, it's a simple matter of AEAD and key rotation. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-01-10 06:08:33 +01:00
lightningd/cryptomsg: discard unknown odd messages internally. This saves all callers having to handle it. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-04-01 12:25:59 +02:00
/* Low-level functions for sync comms: doesn't discard unknowns! */
crypto_sync: synchronous routines for inter-peer crypto. This is used by the opening daemon, for example. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-02-21 05:45:29 +01:00
u8 *cryptomsg_encrypt_msg(const tal_t *ctx,
struct crypto_state *cs,
const u8 *msg);
lightningd/crypto_sync: fix sync_crypto_write / sync_crypto_read wire_sync_write() adds length, but we already have it, so use write_all. sync_crypto_read() handed an on-stack buffer to cryptomsg_decrypt_header, which expected a tal() pointer, so use the known length instead. sync_crypto_read() also failed to read the tag; add that in (no overflow possible as 16 is an int, len is a u16). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-02-24 06:52:35 +01:00
bool cryptomsg_decrypt_header(struct crypto_state *cs, u8 hdr[18], u16 *lenp);
crypto_sync: synchronous routines for inter-peer crypto. This is used by the opening daemon, for example. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-02-21 05:45:29 +01:00
u8 *cryptomsg_decrypt_body(const tal_t *ctx,
struct crypto_state *cs, const u8 *in);
headers: fix up header idempotent lines. For future reference, done via: for f in `find wire/ bitcoin/ common/ lightningd -name '*.h' ! -name 'gen*'`; do ID=`echo -n LIGHTNING/$f | tr 'a-z' 'A-Z' | tr -cs 'A-Z0-9' _`; sed 's/^#\(ifndef\|define\) .*_H$/#\1 '$ID/ < $f | sed 's,#endif /..*_H ./$,#endif /* '$ID' */,' | bagto $f; done Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2017-08-28 18:06:01 +02:00
#endif /* LIGHTNING_COMMON_CRYPTOMSG_H */
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